Process for the production of thiuram polysulfides

Details Process for the production of thiuram polysulfides Process for the production of thiuram polysulfides

C - Chemistry, Metallurgy

07

C

260/306.3, 260/5

C07C 333/32 (2006.01) C07D 295/21 (2006.01)

Patent

CA 1285946

ABSTRACT A process for the production of thiuram poly- sulfides substituted by aliphatic, araliphatic and/or cycloaliphatic hydrocarbon radicals in which correspondingly substituted secondary amines having a pKa-value of >8 are reacted with carbon disulfide and sulfur in a solvent at 0 to 150°C in the presence of a metal-containing catalyst and oxygen or an oxygen-containing gas; by virtue of its high purity, the thiuram polysulfide obtainable in this way may be directly used for its intended purpose, for example, as a vulcanization accelerator or sulfur donor; this process is distinguished over known processes for the production of thiuram polysulfides in particular by the substantially quantitative yields and selectivities and also by its high economy which derives from the fact that the reaction is carried out in a single stage without expensive auxiliaries and from the elimination of an additional purification step.

474839

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